Compagnie Generale Des Etablissements Michelin

Centre National De La Recherche Scientifique

Université Paul Sabatier (toulouse Iii)

Institut National Polytechnique De Toulouse

Remi Cote

Antoine Paturle

Florian Bremond

Thierry Bosch

Guillaume Chazal

Jean-michel Loubes

Bastien Grimaldi

Francis Bony

A method for estimating a water height on a roadway where a tire of a vehicle is running, the mounted assembly being placed in a wheel arch of the vehicle, comprises the following steps: fixing a sensor onto the vehicle; obtaining a frequency signal from the sensor corresponding to the running of the vehicle at speed V on the roadway covered with a water height heau; isolating a part of the frequency signal, bounded by two strictly increasing frequencies, which is sensitive to the height heau; determining an energy vector linked to the part of the frequency signal; and obtaining the water height on the roadway using a function taking account of the energy vector and the speed V of the vehicle. The sensor is a microphone, and the part of the frequency signal extends at least partly beyond 4 kHz.

Method for estimating the water level on a roadway when a tire is running

A method for determining a road condition is carried out aboard a vehicle driving on the road and comprises the following steps: capturing the noise created by the friction between at least one tire and the road; analyzing the noise signal in the high frequency range to determine whether the road condition is dry or not; and, in case the road condition is not dry, analyzing the noise signal in the low frequency range to determine whether to road condition is wet or damp.

Method and system for real-time estimation of road conditions and vehicle behavior

Growing community of inventors

Clermont-Ferrand, France

Remi Cote